Classifications

• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
  • C08G75/00—Macromolecular compounds obtained by reactions forming a linkage containing sulfur with or without nitrogen, oxygen, or carbon in the main chain of the macromolecule
  • C08G75/02—Polythioethers
  • C08G75/0204—Polyarylenethioethers
  • C08G75/0286—Chemical after-treatment
  • C08G75/029—Modification with organic compounds

Definitions

• the invention relates to high molecular weight polyarylene sulfides (PAS), preferably polyphenylene sulfides (PPS), made from polyarylene sulfides, preferably polyphenylene sulfide and dihalo compounds.
• PAS high molecular weight polyarylene sulfides
• PPS polyphenylene sulfides
• Polyarylene sulfides known e.g. US-PS 3354129, EP-OS 171021. They are inert, high-temperature resistant thermoplastics, which also allow a high degree of filling with glass fibers and / or other organic fillers.
• the use of these polymers, in particular polyparaphenylene sulfide (PPS), is increasing above all in areas that have hitherto been reserved for thermosets.
• a disadvantage of PAS can be unsatisfactory toughness, which can increase with increasing melt viscosity. Rapid crystallization of the PAS can also be disadvantageous for some applications, for example in the production of films. The tendency towards rapid crystallization is also lower for PAS types with a high melt viscosity.
• the invention therefore relates to high molecular weight polyarylene sulfides, preferably polyphenylene sulfides, prepared by reacting known polyarylene sulfides, preferably polyphenylene sulfide, with dihalogen compounds of the formula (I) Hal-R-Hal (I), in which R is C6 ⁇ 22-alkylene, preferably a hexamethylene, C6 ⁇ 22-cycloalkylene, C6 ⁇ 22-bis (halogenomethyl) arylene, the arylene radical preferably being an m- or p-phenylene radical or a 1,4-, 1st , 5-, 1,6-, 1,7-, 1,8-, 2,6- or 2,7-naphthylene and the arylene radicals can optionally be C1 ⁇ 6-alkyl, preferably methyl, halogen (e.g. Cl-, Br-) methyl-, C6 ⁇ 22- aryl, preferably phenyl or halogen (eg Cl
• dihalogen compounds are aromatic and aliphatic dihalogen compounds of the formula (I), for example p-xylylene dichloride, m-xylylene dichloride, 2,4- (dichloromethyl) -1,5-dimethylbenzene, 1,6-dichlorohexane, 1,12-dichlorododecane, 1 , 2,3-, and 1,2,4- and 1,3,5-tri- (chlor methyl) benzene, 1,6- and 2,6-di (chloromethyl) naphthalene and the corresponding bromine compounds. They can be used individually or as a mixture.
• the polyarylene sulfides are produced by melting together a mixture of polyarylene sulfide with 3 to 30% by weight, preferably 5 to 20% by weight, of dihalogen compound of the formula I, for example in (screw shafts) extruders, kneaders, etc.
• An aftertreatment time in the melt is 0.5 to 500 min, preferably 5 to 60 min.
• the suitable temperature for the aftertreatment according to the invention in the melt is 280 ° C. to 450 ° C., preferably 300 ° C. to 360 ° C.
• moldings made from the polyarylene sulfides to be used according to the invention can also be after-treated with dihalo compounds of the formula (I) in the solid phase at from 150 ° C. to 270 ° C.
• the process according to the invention can be carried out under inert gases (e.g. nitrogen, argon), if appropriate in vacuo up to 10 ⁇ 6 bar. Carrying out under inert gas is preferred.
• inert gases e.g. nitrogen, argon
• the polyarylene sulfides produced according to the invention can be processed into molded articles, fibers or films by the process of injection molding or extrusion.

Landscapes

• Chemical & Material Sciences (AREA)
• General Chemical & Material Sciences (AREA)
• Health & Medical Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Medicinal Chemistry (AREA)
• Polymers & Plastics (AREA)
• Organic Chemistry (AREA)
• Polymers With Sulfur, Phosphorus Or Metals In The Main Chain (AREA)
• Compositions Of Macromolecular Compounds (AREA)
• Manufacture Of Macromolecular Shaped Articles (AREA)

Applications Claiming Priority (2)

Publications (2)

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ID=6361122

Family Applications (1)

Country Status (4)

Cited By (3)

Families Citing this family (1)

Family Cites Families (5)

• 1988
  • 1988-08-18 DE DE3828058A patent/DE3828058A1/de not_active Withdrawn
• 1989
  • 1989-08-05 EP EP19890114518 patent/EP0355541A3/fr not_active Withdrawn
  • 1989-08-07 US US07/390,229 patent/US4978729A/en not_active Expired - Fee Related
  • 1989-08-15 JP JP1209725A patent/JPH02103233A/ja active Pending

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